Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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EC number: 201-121-3 | CAS number: 78-50-2
Oxidising properties
Administrative data
Link to relevant study record(s)
Description of key information
Although the substance does contain oxygen, it is considered scientifically unjustified to perform a test as the proportion of oxygen is very low (only 1 atom per molecule). In addition, none of the chemical groups that are associated with oxidizing properties are present in the molecular structure of the substance.
Key value for chemical safety assessment
- Oxidising properties:
- no
Additional information
In accordance with Section 1 of REACH Annex XI, testing for oxidizing properties was not considered necessary. Indeed, although the substance contains oxygen, its proportion is very low (only 1 atom per molecule). In addition, none of the chemical groups that are associated with oxidizing properties are present in the molecular structure of the substance. The chemical groups that are associated with oxidizing properties are mentioned in Table R.7.1-29 on page 141 of the ECHA Guidance document “Guidance on information requirements and chemical safety assessment, Chapter R.7a: Endpoint specific guidance" of May 2008 (and are adapted from Bretherick’s Handbook of Chemical Reactive Hazards).
Justification for classification or non-classification
Although the substance contains oxygen, the proportion is very low (only 1 atom per molecule). In addition, none of the chemical groups that are associated with oxidizing properties are present in the molecular structure of the substance. Hence, no classification is required for this endpoint according to CLP (EC 1272/2008).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
